arrow function

 you can simply remove function name and write arrow function:

 syntax:

var show=function show(a,b){

    c=a*b;

 console.log(c);

}

show(10,20)

to

var show=(a,b)=>{ c=a*b

   console.log(c);  

}

show(10,20)

console.log("working")

// var func=function what(a){

//  console.log("what are you trying to do"+a)

// }

// func(12)

// var func1=()=>{console.log("hello buddy")}

// func1

// var func1=(a,b,c)=>{

//  d=a+b+c;

//  console.log("your ans is"+d)

// }

// func1(10,20,30)

//arrow function with default parameters

// var func1=(a,b,c=30)=>{

//  d=a+b+c;

//  console.log("your ans is"+d)

// }

// func1(10,20)

// var func1=(a,b)=>{return a*b}

// c=func1(10,20)

// console.log(c)

var show=(a,b)=>{return a*b}

console.log(show(10,20))